CVE-2026-33159

Craft CMS: Unauthenticated users could execute project configuration sync operations that should be restricted trusted users

State: Published
Severity: 6.9 Medium
Published: Mar 24, 2026
Updated: Mar 24, 2026
Reserved: Mar 17, 2026

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Description

Craft CMS is a content management system (CMS). From version 4.0.0-RC1 to before version 4.17.8 and from version 5.0.0-RC1 to before version 5.9.14, guest users can access Config Sync updater index, obtain signed data, and execute state-changing Config Sync actions (regenerate-yaml, apply-yaml-changes) without authentication. This issue has been patched in versions 4.17.8 and 5.9.14.

Scores

CVSS	Score	Vector	Source
4.0	6.9 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N	GitHub_M

Weaknesses

CWE-306 Missing Authentication for Critical Function
CWE-862 Missing Authorization

Affected Products

Product	Versions
cmscraftcms	>= 4.0.0-RC1, < 4.17.8Affected >= 5.0.0-RC1, < 5.9.14Affected

References

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